Reaktion #54184

Reaktionsgleichung

1(2-furyl)-1-ethanol

sodium hypochlorite

Chlorine

→

maltol

Lösungsmittel

tetrahydrofuran

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturmaintaining the reaction temperature below 5° C
2. 2
   TemperaturThe reaction mixture is then heated
3. 3
   Temperaturto reflux
4. 4
   Sonstigethe tetrahydrofuran removed by distillation
5. 5
   TemperaturHeating
6. 6
   workup.WAITis continued for an additional hour
7. 7
   TemperaturThe reaction mixture is cooled

Vorschrift

To a solution of 1(2-furyl)-1-ethanol (0.05 mole) in 15 ml of tetrahydrofuran and 15 ml of water at 5° C. is added 21.7 ml of 2.8 M sodium hypochlorite solution. Chlorine (0.05 mole) is added to the reaction flask via a gas inlet tube maintaining the reaction temperature below 5° C. The reaction mixture is then heated to reflux and the tetrahydrofuran removed by distillation. Heating is continued for an additional hour. The reaction mixture is cooled and maltol is isolated by the procedure described in Example 1.

Quelle